Perhaps, I should have specified that it has come to mean good in this context. It probably started out as a short hand for something like "incredibly good" (as

Perhaps, I should have specified that it has come to mean good in this context. It probably started out as a short hand for something like "incredibly good" (as in, "it's hard to believe it's so good"). As long as we're quoting dictionary definitions (also from dictionary.com). We're using definition 2, here: incredible adjective 1. beyond belief or understanding; unbelievable 2. informal marvellous; amazing Good is definitely a judgment, but there is no reason to suppose it is a moral one. If I say a sandwich is good, it means that I like the taste not that I think it is righteous in the eyes of God. Ironically, perhaps, if I thought the sandwich was especially delicious, I might say that it is righteous. The vast majority of native English speakers would immediately understand my intended meaning rather than the literal one. I find it somewhat incredible that I have to explain this.